7x+41x=192
48x=192
x=192:48
x=4
40x-4x=540
36x=540
x=540:36
X=15
(9X+7X)*6=288
16X=288:6
16X=48
X=48:16
x=3
x=192/48
x=540/36
x=15
(9x+7x)*6=288
16x*6=288
96x=288
x=288/96
7x+41x=192
48x=192
x=192:48
x=4
40x-4x=540
36x=540
x=540:36
X=15
(9X+7X)*6=288
16X=288:6
16X=48
X=48:16
x=3
7x+41x=192
48x=192
x=192/48
x=4
40x-4x=540
36x=540
x=540/36
x=15
(9x+7x)*6=288
16x*6=288
96x=288
x=288/96
x=3